Self-adaptive air flotation device

Abstract

The utility model relates to a self-adaptive air flotation device which comprises an air flotation cushion arranged on an air supply device, and the air supply device blows air towards one side of the air flotation cushion to form a supporting air film to support the air flotation cushion; the supporting assembly is positioned on the air floating cushion and is used for supporting a satellite antenna plate; the air floatation cushion comprises an air floatation base and a mounting plate used for being connected with a supporting assembly, a guide shaft assembly is arranged between the air floatation base and the mounting plate, and the guide shaft assembly can be adjusted in a self-adaptive mode relative to the air floatation base. Compared with the prior art, the beneficial effects of the utility model lie in that the magnitude and the direction of the pressure applied to the air floating cushion by the satellite antenna plate in the moving process are changed, and the direction of the pressure is adjusted through the self-adaptive effect of the guide shaft assembly in the air floating cushion; the direction in which the air is transmitted to the air floating base is opposite to the supporting direction of the supporting air film, so that the air floating cushion is kept in a stable state.

Description

Technical Field

[0001] This utility model relates to a satellite antenna plate deployment test device, specifically an adaptive air flotation device. Background Technology

[0002] To ensure the reliability of satellite deployment mechanisms during on-orbit deployment, all deployment mechanisms must undergo ground-based deployment tests simulating on-orbit deployment conditions. These tests assess the clamping and releasing functions of the mechanism's clamping and releasing devices, as well as the deployment and locking functions of the mechanism itself. The main purpose of ground-based deployment tests for large, heavy-load space deployment mechanisms is:

[0003] The assessment includes the deployment mechanism's structure and coordination, as well as the reliability and stability of its deployment functions.

[0004] Verify the conformity of the deployment mechanism structure and the anisotropic indicators of the mechanism components with the overall technical requirements;

[0005] Existing deployment test methods mainly fall into three categories: air flotation, suspension, and air flotation + suspension. The air flotation deployment method supplies gas at a certain pressure to the air flotation pad assembly of the deployment mechanism through pipelines, forming an air film between the air flotation pad assembly and the air flotation platform. This generates a stable force to balance gravity, simulating on-orbit zero-gravity deployment and retrieval tests. The vertical suspension deployment method balances vertical gravity through a suspension system, while the suspension points move horizontally along the guide rails. During deployment, the driving torque of the torsion springs is horizontal, avoiding coupling with vertical gravity.

[0006] Chinese invention patent CN112340071B, authorized by CN112340071B, provides a large-scale heavy-duty air-bearing suspension deployment test device and method, comprising: an air-bearing guide rail device, an air tube follower device, a suspension frame, and a suspension device; the air tube follower device is distributed along the air-bearing guide rail in the air-bearing guide rail device and connected to the mounting plates at both ends of the air-bearing guide rail, with one air tube follower device installed on each air-bearing guide rail; the air-bearing guide rail device is connected to the suspension frame; the suspension device is connected to the air-bearing guide rail device; the air-bearing guide rail device uses the principle of gas static pressure effect to simulate the on-orbit microgravity environment, providing a near-zero friction deployment test environment for large load antennas; the suspension device uses a suspended balanced gravity compensation method to compensate for the actual mass of the load antenna. This invention can meet the testing requirements of multiple models and types of load antennas, adapt to deployment tests under different design requirements in multiple working conditions, improve work efficiency, and meet the requirements of model missions.

[0007] However, in actual tests, because the trajectory of the antenna plate is uncertain, the pressure and direction of the air cushion on different positions of the antenna plate are not the same. Meanwhile, the supporting air membrane provides consistent support force and direction to all positions of the air cushion, which leads to instability of the air cushion itself. Utility Model Content

[0008] In order to solve the above-mentioned problems in the prior art, this utility model provides an adaptive air flotation device.

[0009] The above-mentioned problems of this utility model are solved by the following technical solution:

[0010] An adaptive air flotation device includes,

[0011] An air-supported cushion is installed on an air supply device. The air supply device blows air towards one side of the air-supported cushion to form a supporting air film, which supports the air-supported cushion.

[0012] A support assembly, located on the air cushion, supports the satellite antenna plate;

[0013] The air-floating pad includes an air-floating base and a mounting plate for connecting support components. A guide shaft assembly is provided between the air-floating base and the mounting plate, and the guide shaft assembly is capable of adaptive adjustment relative to the air-floating base.

[0014] A further provision of the above technical solution is that the guide shaft assembly includes a guide rod, the upper end of which is movably connected to the bottom of the support assembly, and the lower end is configured as a spherical surface;

[0015] The air-float base is provided with an adjustment groove that matches the lower end of the guide rod and accommodates the rotation of the lower end of the guide rod.

[0016] A further provision of the above technical solution is that: a connecting shaft is fixed at the lower end of the support component, and the guide rod is movably disposed below the connecting shaft and can adaptively move relative to the connecting shaft in the axial direction.

[0017] A further feature of the above technical solution is that the upper part of the guide rod is configured as a hollow adjustment cavity, and extends to the upper end opening of the guide rod. The lower part of the connecting shaft can extend into the adjustment cavity through the upper end opening of the guide rod, and can move up and down within the adjustment cavity.

[0018] The wall of the adjustment cavity is provided with a straight groove, and the connecting shaft is provided with a limiting rod that can limit the sliding within the straight groove.

[0019] A further provision of the above technical solution is that a spring is sleeved on the guide rod, the upper end of the spring abuts against the lower end face of the mounting plate, and the lower end abuts against the adjusting bolt of the guide rod.

[0020] A further provision of the above technical solution is that: a countersunk hole is provided on the mounting plate, the connecting shaft is fixed in the countersunk hole, and its lower end extends to the bottom of the mounting plate.

[0021] A further provision of the above technical solution is that the support assembly includes an electric cylinder and a support rod, and a pressure sensor is provided between the electric cylinder and the support rod.

[0022] A further provision of the above technical solution is that a position sensor is installed on the side of the electric cylinder.

[0023] A further provision of the above technical solution is that the support rod includes an inner rod and an outer rod, the inner rod being located inside the outer rod and capable of extending or retracting relative to the outer rod to adjust the length of the support rod.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows: the pressure magnitude and direction of the satellite antenna plate on the air float change during the movement. Through the adaptive action of the guide shaft assembly inside the air float, the direction of the pressure is adjusted so that the direction transmitted to the air float base is opposite to the support direction of the supporting air film, thereby keeping the air float in a stable state; and a pressure sensor is set to adjust the pressure of the satellite antenna plate, thereby ensuring that the pressure of the satellite antenna plate on the air float remains relatively constant during the movement. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0026] Figure 2 This is a schematic diagram of the explosive structure of an air-bearing cushion.

[0027] Figure 3 This is a schematic diagram of the cross-sectional structure of an air-bearing cushion.

[0028] Figure 4 This is a schematic diagram of the connection structure between the electric cylinder and the servo motor.

[0029] Figure 5 This is a schematic diagram of the cross-sectional structure of the support rod.

[0030] The attached diagram is labeled as follows: 100, air float; 110, air float base; 120, guide shaft assembly; 121, guide rod; 111, adjusting groove; 130, mounting plate; 122, connecting shaft; 121.1, adjusting cavity; 121.2, straight groove; 123, limiting rod; 124, adjusting bolt; 125, spring; 131, countersunk hole;

[0031] 200. Support assembly; 210. Electric cylinder; 220. Servo motor; 230. Support rod; 231. Outer rod; 232. Inner rod; 233. Connecting screw; 234. Adjusting nut;

[0032] 300. Pressure sensor;

[0033] 400. Position sensor. Detailed Implementation

[0034] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0035] like Figure 1-5 As shown, this embodiment discloses an adaptive air flotation device.

[0036] An adaptive air flotation device includes,

[0037] An air-floating pad 100 is installed on an air supply device. The air supply device blows air toward one side of the air-floating pad 100 to form a supporting air film, which supports the air-floating pad 100.

[0038] The support assembly 200, located on the air cushion 100, supports the satellite antenna plate;

[0039] The air-floating pad 100 includes an air-floating base 110 and a mounting plate 130 for connecting the support assembly 200. A guide shaft assembly 120 is provided between the air-floating base 110 and the mounting plate 130. The guide shaft assembly 120 is capable of adaptive adjustment relative to the air-floating base 110.

[0040] The above is the basic scheme of this embodiment.

[0041] Specific reference Figure 1 As shown, the air-floating pad 100 and the support assembly 200 are arranged from bottom to top. An air supply device is set below the air-floating pad 100, and the air supply device blows air towards the bottom of the air-floating pad 100 to form a supporting air film under the air-floating base 110 of the air-floating pad 100. This generates a stable force to balance the gravity of the air-floating device and the satellite antenna plate, keeping them in a suspended state and providing a balanced working environment for the experiment.

[0042] The satellite antenna plate is mounted on the support assembly 200. During the test, multiple satellite antenna plates need to be arranged and folded. During the folding process, the satellite antenna plates move and change state. Therefore, the magnitude and direction of the pressure exerted by the satellite antenna plates on the air float 100 through the support assembly 200 also change. At this time, due to the adaptive effect of the guide shaft, the direction of the pressure exerted by the satellite antenna plates on the upper part of the air float 100 is adjusted so that the direction transmitted to the air float base 110 is opposite to the support direction of the air film, thereby keeping the air float 100 in a stable state.

[0043] Preferably, in this embodiment, the air-bearing base 110 is a plate-type air-bearing bearing.

[0044] Specifically, the guide shaft assembly 120 includes a guide rod 121, the upper end of which is movably connected to the bottom of the support assembly 200, and the lower end is spherical.

[0045] The air-float base 110 is provided with an adjustment groove 111 that matches the lower end of the guide rod 121 and accommodates the rotation of the lower end of the guide rod 121.

[0046] Specific reference Figure 2 As shown, the adjustment groove 111 is configured as a spherical inner cavity, and the lower end of the guide rod 121 is fitted into the adjustment groove 111 and can rotate within the adjustment groove 111;

[0047] When the satellite antenna plate moves, it drives the mounting plate 130 to move as well, causing the guide shaft assembly 120 at the lower end of the mounting plate 130 to rotate. The lower end of the guide rod 121 rotates in the adjustment groove 111, adjusting the direction of the pressure applied to the satellite antenna plate so that the direction of the pressure transmitted to the air-floating base 110 is opposite to the direction of the supporting air film, thereby ensuring that the air-floating base 110 remains stable in its initial state.

[0048] Based on the above configuration, when the guide rod 121 rotates with the mounting plate 130 under the action of the satellite antenna plate, the guide rod 121 is inclined relative to the air-floating base 110. At this time, since the lower end of the adjustment groove 111 and the guide rod 121 are in contact through the arc-shaped surface, the pressure exerted by the guide rod 121 on the adjustment groove 111 is perpendicular to the contact surface, and other components of the force except in the direction of gravity can be canceled by the reaction force of the adjustment groove 111. Thus, only the component of the force in the direction of gravity acts on the air-floating base 110, keeping the air-floating base 110 stable.

[0049] Specifically, in this embodiment, a connecting shaft 122 is fixed at the lower end of the support component 200, and the guide rod 121 is movably disposed below the connecting shaft 122 and can adaptively move relative to the connecting shaft 122 in the axial direction.

[0050] Specific reference Figure 3 As shown, the movable connection between the guide rod 121 and the connecting shaft 122 is as follows: the upper part of the guide rod 121 is configured as a hollow adjustment cavity 121.1, extending to the upper opening of the guide rod 121. The lower part of the connecting shaft 122 can extend into the adjustment cavity 121.1 through the upper opening of the guide rod 121. Simultaneously, a vertical groove 121.2 is provided on the wall of the adjustment cavity 121.1. A limiting rod 123 is radially inserted through the connecting shaft 122. The end of the limiting rod 123 extends into the groove 121.2 and can move up and down along the groove 121.2, thereby limiting the adjustment direction and adjustment range of the guide rod 121.

[0051] In addition, in this embodiment, a spring 125 is sleeved on the guide rod 121. The upper end of the spring 125 abuts against the lower end face of the mounting plate 130, and the lower end abuts against the adjusting bolt 124 of the guide rod 121.

[0052] Spring 125 supports mounting plate 130 and adjusting bolt 124. Adjusting bolt 124 is fixed to guide rod 121, so that guide rod 121 is always away from mounting plate 130 in its natural state, and can be buffered by spring 125 under pressure changes.

[0053] In addition, an adjusting bolt 124 is provided on the guide rod 121. The preload of the spring 125 can be adjusted by setting the position of the adjusting bolt 124. The rigidity and flexibility of the air cushion 100 can be changed by changing the preload of the spring 125.

[0054] Preferably, in this embodiment, the mounting plate 130 is provided with a countersunk hole 131, and the connecting shaft 122 is fixed in the countersunk hole 131, with its lower end extending below the mounting plate 130.

[0055] Specific reference Figure 3 As shown, a bolt is fixed at the upper end of the connecting shaft 122 and limited in the countersunk hole 131. A washer is fitted on the lower part of the connecting shaft 122, and the upper end of the spring 125 rests on the washer.

[0056] In this embodiment, the support assembly 200 includes an electric cylinder 210 and a support rod 230, and a pressure sensor 300 is provided between the electric cylinder 210 and the support rod 230.

[0057] Specific reference Figure 4 As shown, when the satellite antenna plate moves, the pressure applied to the mounting plate 130 changes. At this time, the pressure sensor 300 detects the change in pressure and applies a force to the mounting plate 130 through the servo electric cylinder 210 to counteract the pressure.

[0058] Preferably, in this embodiment, the pressure sensor 300 is a spoke-type pressure sensor.

[0059] In this embodiment, a position sensor 400 is installed on the side of the electric cylinder 210.

[0060] Based on the above settings, the position of the electric cylinder 210 is received by the position sensor 400, thereby enabling the position of the electric cylinder 210 to be controlled.

[0061] The electric cylinder 210 is driven by the servo motor 220 to control the position of the electric cylinder 210. In this embodiment, the electric cylinder 210 and the servo motor 220 are installed in parallel and are driven by a synchronous pulley and synchronous belt. The synchronous pulley and synchronous belt are installed in the lower return box.

[0062] In this embodiment, to accommodate tests of products of different heights, the support rod 230 includes an inner rod 232 and an outer rod 231. The inner rod 232 is located inside the outer rod 231 and can extend or retract relative to the outer rod 231 to adjust the length of the support rod 230.

[0063] Specific reference Figure 5 As shown, the inner rod 232 and the outer rod 231 are threaded together, and the outer rod 231 can be screwed upward relative to the inner rod 232, so that the lower part of the inner rod 232 extends below the outer rod 231, thereby adjusting the length of the support rod 230.

[0064] In addition, the top of the outer rod 231 is provided with a connecting screw 233 for connecting with the satellite antenna board; the lower end of the outer rod 231 is provided with an adjusting nut 234, which connects the outer rod 231 and the inner rod 232.

[0065] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An adaptive air floating device, comprising, an air floating pad (100) arranged on a gas supply device, the gas supply device blowing gas towards one side of the air floating pad (100) to form a supporting air film to support the air floating pad (100); a support assembly (200) arranged on the air floating pad (100) to support a satellite antenna board; characterized in that the air floating pad (100) comprises an air floating base (110) and a mounting plate (130) for connecting the support assembly (200), a guide shaft assembly (120) is arranged between the air floating base (110) and the mounting plate (130), and the guide shaft assembly (120) can be adaptively adjusted relative to the air floating base (110).

2. The adaptive air bearing of claim 1, wherein: the guide shaft assembly (120) comprises a guide rod (121), the upper end of the guide rod (121) is movably connected to the bottom of the support assembly (200), and the lower end is provided as a spherical surface; the air floating base (110) is provided with an adjusting groove (111) matched with the lower end of the guide rod (121) and accommodating the rotation of the lower end of the guide rod (121).

3. The adaptive air bearing of claim 2, wherein: the lower end of the support assembly (200) is fixed with a connecting shaft (122), the guide rod (121) is movably arranged below the connecting shaft (122) and can be adaptively moved in the axial direction relative to the connecting shaft (122).

4. The adaptive air bearing of claim 3, wherein: the upper part of the guide rod (121) is provided as a hollow adjusting cavity (121.1) extending to the upper end opening of the guide rod (121), the lower part of the connecting shaft (122) can extend into the adjusting cavity (121.1) through the upper end opening of the guide rod (121) and can move up and down in the adjusting cavity (121.1); a straight groove (121.2) is arranged on the wall of the adjusting cavity (121.1), and a limiting rod (123) is arranged on the connecting shaft (122) to limit sliding in the straight groove (121.2).

5. The self- adaptive air floatation device of claim 2 or 3, wherein: a spring (125) is sleeved on the guide rod (121), the upper end of the spring (125) supports the lower end surface of the mounting plate (130), and the lower end supports the adjusting bolt (124) of the guide rod (121).

6. The adaptive air bearing of claim 3, wherein: a counterbore (131) is arranged on the mounting plate (130), the connecting shaft (122) is fixed in the counterbore (131), and the lower end extends below the mounting plate (130).

7. The adaptive air bearing of claim 1, wherein: the support assembly (200) comprises an electric cylinder (210) and a support rod (230), and a pressure sensor (300) is arranged between the electric cylinder (210) and the support rod (230).

8. The self- adaptive air floatation device of claim 7, wherein: a position sensor (400) is arranged on the side of the electric cylinder (210).

9. The self- adaptive air floatation device of claim 7, wherein: the support rod (230) comprises an inner rod (232) and an outer rod (231), the inner rod (232) is arranged inside the outer rod (231) and can extend or retract relative to the outer rod (231) to adjust the length of the support rod (230).

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